Stove-grate



' E. 1). NBLLIS.

No. 47 8,042. Patented June 28, 1892.

(No Model.) 2 SheetsSht 2.

E; D; NELLIS.

STOVE GRATE- No. 478,042. Patented June 28, 1892.

* 7 UNITED STATES PATENT OFFICE.

EMERY D. NELLIS, OF ST. LOUIS, MISSOURI.

STOVE-G RATE.

SPECIFICATION formingpart of Letters Patent No. 478,042, dated June 28, 1892. Application filed August 18, 1891. Serial No. 402,998." (No model.)

To all whom it may concern.-

Be it known that I, EMERY D. NELLIS, a citizen of the United States, residing in the city of St. Louisand State of Missouri, have invented certain ments in Stove-Grates,of which the following is a full, clear, and exact description.

' My invention relates to grates formed in the bottom plate of the fire-boxes of stoves for admitting air to the fire and for withdrawing the ashes, &c., and has for its object to make of such grate a draft-regulator capable of being made practically air-tight and to make of the whole a center-draw (lumpingplate.

It consists in the novel, features in the con-.

struction of the fire-box bottom plate of stoves hereinafter described. In the accompanying drawings, in which like letters of reference denote like parts in the several figures, I have illustrated my improved grate as adapted to an upright cylinder heating-stove, which will serve to show its application as well to other forms of stoves.

Figure 1 is a fire-box bottom plate as constructed to accommodate my improved grate. Fig. 2 is a view, as in Fig. 1, of the bottom of the same. Fig. 3 is a perspective View of the handle for operating the grate. Fig. 4 is a detail perspective view of the separate parts of my improved grate and consequent construction of the fire-box bottom plate. Fig. 5 is a vertical section, taken as on the lines 5 5 in Fig. 6, of the lower portion of a heating-stove with my improved grate attached. Fig. 6 is a horizontal section of the same, taken as on the line 6 6 in Fig. 5; and Figs. 7 and 8 are sections, taken as on the line 7 7 in Fig. 6, of the grate-bars, showing, in Fig. 7, the full in Fig. 8, the draft closed.

As illustrated in Figs. 2 and 4, I construct the fire-box bottom plate A with an open space E, which is normally covered by the open grate-plate C, the forward part of said bottom plate being iinperforate, so as to form a deadplate beneath which the grate 0 moves when withdrawn to close the opening B of the bottom plate. Lips h are formed in the sides of the opening B to support the sliding grate O in such manner as to adapt the grate-plate to be given a longitudinal movementuncovernew and useful Improve-- forms the ash-box and of the stove.

perspective top'view of the 'ver-bar G, the back end of pin or stud H, secured to draft open, and

ing the opening, as illustrated in dotted lines in Fig. 5, and as shown in the two positions of the grate-plate O in Figs. 1 and 2, respectively. This movement is preferably a forward-andbackwardmovement, as illustrated in Figs. 2 and 5, forming a center-draw, con Veniently operated from thefront of the stove through the ash-box door R.

The stove illustrated in the drawings is designed for burning wood, and for this reason the bottom plate A is formed with raised ribs a to hold the fuel away from the grate, enabling a full draft to back one acting as a stop to the longitudinal movement of thegrate-plate O in that direction. As shown in Fig. 5, the bottom plate'A is fitted to the interior of the bottom of the fire-box, a flange d being formed in the lower edge of the fire-box casting D to support the same, the whole resting on the casting E, which supporting frame-work Preferably in the front portion of the ash-box casting is formed an opening closed by the door R, which door is formed with a sliding open front 7', by which air is admitted and regulated to the interior of the ash-box D. The forward and back edges of the grate-plate O lips 0, between which is fitted the grid of movable grate-bars E, adapting the grid F to be given a longitudinal movement by the lewhich ispivotally secured by the split spring- 7 or formed inthe back edge of the grate-plate O. {The-amountof this lateral play of between the guides c is regulated by stopsya s' the fire, the transverse are formed with the raised pin h on the pivot s, 4, secured to the grate-plate O for the grid F to strike against, or s, Fig. 2, for the operating-bar G to abut against. As shown in the detail View in Fig. 4 of the grid F, it is formed with a projecting pin I, which engages with the lever-bar G formed in the bar therefor.

As shown in Figs. 1 and5, tive position of the fire-box bottom plate A and the parts of the grate is with the grate below and dependently supported by the lips 1), formed in the bottom-plate casting A. As between the grate-plate O and the grid F, the gridis below and is supported in position by the normal relathe lever-bar G, the bar itself being sup in a perforation 2' ported at its back end by the pin h, which secures it to the studH, the forward end being supported by the yoke extension K, which is formed in or secured to the bottom plate A. (See Figs. 1, 2, and 5.) The projecting end of the lever-bar G is formed with a shoulder forming a hook with parallel sides, which is fitted to a stirrup-formed end of the removable handle L, adapting the bar G to be given by the handle L a sidewise oscillating movement, as in operating the grid F relative to the grate-plate O, as hereinafter. described, and a backward-an d-forward movement of the grate as awhole, as in covering and uncovering the opening B in the bottom plate A, as hereinafter described. The grateplate' 0 is preferably made with-parallel bars and, intermediate openings between the bars,: as illustrated, the openings between the bars being of a widthcorresponding to thewidth of .the bars-for this reasointhat when the} grid F, which is constructed similarto the plate 0, is secured to the under side thereof, it is adapted to either fully cover the intermediate openings between the bars in the;- plate 0, as shown in Fig. 8, or, as shown in' Fig. 7, to fully open the same. In this wayv the grate as a draft-regulator is adapted to be made practically air-tight, or to be made to operate as an ordinary congeriesof grate-1 bars when in theirlnorm-al position, as shown in Fig. 7, as covering the opening B in the, bottom plate A. In this-way-that is, by the;

application of myimproved grate to the bot-1;

tom plate of the stove-the bottom framing. of .the stove can be made air-tight, enabling fire to-be kept alive-for a much longer time without attention than would be possible oth-, erwise, thereby obviating'the necessary care. in constructing straight draft-stoves to make the portion thereof below the fire-box air-ti gh t.

In operation the principles of my improved; grate are as follows: NVhe-n it is desired to; dump the ashes into. the-ash-bo'x, the grate asi a whole is drawn forward by applying thei handle Lto theend of the lever-bar .G,-un-I; covering the opening B in the bottom plate. A to the position shown in 2 and in dot-. ted lines in Fig. 5. When it is desired to regulate the draft to the fire, the sliding fronti of the door B being. opened, the lever-bar GR is thrown more or less to one side (the rights as shown in the drawings) until the desired amount of opening is effected through the grate-bars. When it is desired to wholly shut off the draft, the lever G is thrown all the way to the left, arranging the relative position of the bars of the plate 0 and the grid F so as to close the openings therethrough, or, as shown in Fig. 8, the lever G being in the upper position shown in dotted lines in Fig. 6. When it is desired to merely shake the grate, the lever G is oscillated from side to side, opening and closing the openings through the grateplate 0.

I claim- 1. The combination, with a fire-box bottom plate having a grate-opening, of a reciprocating grate adapted to close the opening in the bottom-plate,-a grid arranged to reciprocate transversely of the grate and adapted to close the grate, and means for actuating the grate and the grid, substantially as and for. the purposes specified.

2. The combination, with a fire-box bottom plate having a grate-opening, of areciprocating grate adapted to close the opening in the bottom plate, a grid mounted on the grate and arranged to reciprocate transversely thereof, and a bar or lever mounted on the grate and adapted to actuate both the grate and grid, substantially as and for the purposes specified.

3. The combination, with'a fire-boxbottom plate having a grate-openingand provided on its upper surface with ribs'to support the fuel, of a sliding grate, adapted ,to close the grateopening of the bottom plate and a movable grid ad apted to close the grate-openings, substantially as and for the purposes specified.

4. In a stove, fire-box bottom plate A, form ed with opening 13 and lips I), grate -plate (J, formed with lips c and pivotal stud I'I, grate- .plate F, formed with pivotal stud I, lever-bar G,-pin h, and handle ,L, combined and operating substantially as described, and forthe purposes specified.

In testimony whereof I have affixedmy signature, in presence of two witnesses, this 30th day of July, 1891.

EMERY D. NELLIS.

Witnesses:

A. RAMEL, J. W. CROOKES. 

